Very nice game concept. Made it to wave 12, score of 325, 445.
The music was also very catchy, and I'd like to know the origin of it.
Viewing post in Valkyrie: Sacred Feathers S comments
I guess it's possible that you bought a different version of the pack than I did, so maybe your EULA is different than mine, or something. But assuming that your EULA is the same as mine, it should be around the bottom of page 2:
2.3 Your game must include additional documentation that clearly indicates the use of the Resource Pack and the following copy:
[Copyright](C) Bitter Sweet Entertainment, Inc.
Published by: Degica Co., LTD
Resource creators: Bitter Sweet Entertainment, Inc.
If you're talking about the music that plays during combat, it's a track called "BGM Scene6 Valkirie FSPC", from the Future Steam Punk resource pack.
I like the pack in that pretty much every song in the pack is really catchy, and I enjoy listening to them. But I've found that it's kinda hard to actually use a lot of them in RPGs, because almost every song has such a fast tempo that they just don't really seem to fit many situations. I'm thinking that whoever composed the music probably didn't actually do so with the initial intention of it being used in RPGs. But it turns out that the pack fits a game like this one pretty well.